Autor: Gabriel Rolon
AR$ 129.00
de: Henry E. Dudeney
de: Des Mac Hale, Paul Sloane
de: Varios
de: Alvaro Volando
de: Raymond Blum
de: Paul Sloane
de: Martin Gardner
de: Jaime Poniachik
de: Karen C. Anderson
de: Daniel Samoilovich
de: Hy Conrad
de: Steve Ryan